Stuccoing and plastering machine



March 24, 1931.

E MORELLI STUCCOING AND PLASTERING MACHINE Filed Sept. 17, 1928 GSheets-Sheet l March24, 1931. E. MORELLI 1,797,566

STUCCOING AND PLASTERING MACHINE Filed Sapt. 1'7, 1928 6 Sheets-Sheet 2 &

E. MORELLI March 24, 1931-.

STUCCOING AND PLASTERTNG MACHTNE 6 Sheets-Sheet 3 Filed Sept. 17., 1928 ITTOKNEY,

STUCCOING AND PLASTERTNG MACHINE Filed Sepi 1'7 1928 6 Sheets-Sheet 4 E. MORELLVI March 24, 931.

S TUCGOING AND PLASTERING MACHINE Filed Sept. 17 1929 6 Sheets-Sheet ATTORNEY.

March 24, 1931. E. MORELLI STUCCOING AND PLASTERING MACHINE Filed Sept. 17 192? 6 Sheets-Sheet INVENTOR E/ 0 Mei/.41.

A TTORNE Y.

tilNlTEi) memes PATENT OFFMEE ENRICO MORELLI, OF CINCINNATI, OHIO STUGCOING AND PLASTER-ING MACHINE Application filed September 17, 1828. Serial No. 306,487.

My invention relates particularly to machines for applying plaster or stucco or the like material to buildings.

Heretotore, considerable time, difliculty and expense has been experienced by builders, contractors, and other persons in applying plaster to walled surfaces. Generally, this work has been manually performed. However, the important disadvantage of applying plastic material by manual process is that tnis method is slow and tedious with con sequential heavy expenses. 7

Also, in many instances, the material is un- M intentionally applied unevenly with the re sult that the completed wall is unsightly.

The objects of the invention are to provide a simple, efficient, and durable device for utilization in economically and effectively applying plaster, stucco, and the like plastic material, to surfaces such as the walls; to provide means whereby the material being applied is automatically conveyed from a supply hopper, spread upon said surface and smoothed thereon; to provide material conveying means unadapted to clog and become inoperative or require frequent replacement of its parts; to provide means whereby the outer surfaces of the applied plastic material is smooth and even; to provide manually adjust-able means whereby the thickness of the plaster applied on the wall may be automatically controlled; to provide manually operative mechanism adapted to automatically compensate the quantity of plaster required to be fed from said hopper.

The invention consists in the combination of the parts, in the details of the construction, and in the arrangement of the elements, as claimed.

In the drawings:

Fig. 1 is a side elevation of the invention;

Fig. 2 is a rear elevation of the invention with parts broken away taken on line 22 in Fig. 1;

Fig. 3 is a section taken on a line corresponding to 33 in Fig. 1;

at is a section taken on a line corresponding to l4: in Fig. 5 with parts broken away;

Fig. 4A is a section taken on a line corre spending to 4:t in Fig. 5 with parts broken away;

Fig. 5 1s an enlarged front elevation of the invention, showing parts broken away;

Fig. 6 is a section taken on a line corresponding to 6-6 in Fig. 1, with the base and belt removed;

Fig. 7 is a section taken on a line corresponding to 77 in Fig. 6;

Fig. 8 is a section taken on a line corre sponding to 88 in Fig. 6 with parts removed;

Fig. 9 is a section taken on line 99 in Fig. 7 with the smoothing mechanism D removed.

In the preferred construction of the invention, l provide the plastering machine 1 hav ng the frame 2 comprising the spaced apart rectangular vertical supports 3, the base i, the top plate 5 and the telescopic supports 6 slidably mountec in the holes 7 in th upper ends 8 of the supports 3. The lower ends 8 ot' the supports 3 are received in the base 4 and secured thereto in any suitable manner.

Slidably mounted on the supports 3 is the carriage 9. The frame 10 of the carriage comprises the spaced apart sides 11 and 12 each having the spaced apart rectangular holes 13 and 14 herein slidably receiving the sup,- ports 3. The sides 11 and 12 are maintained in fixed relation with respect to each other as by the spaced apart and parallel horizontal struts 15, 16, and 17, extending intermediate the sides Hand 12 and integral therewith.

Intermediate the holes 13 in the side 11 of thetrame 10 is the integral hub 18 threaded to the vertical screw 19 having its lower end journaled in the bearing 20 in the base 4. The upper end 21 of the screw 19 is journaled in the bearing 22 in the top plate 5. Intermediate the holes 14 in the side 12 of the frame 10 is the integral. internal threaded hub 23 threaded to the vertical screw 24 havits lower end journaled in the bearing 25 the base 41-. The upper end 26 of the screw 24:, having its lower end slidably mounted the upper end of the screw 24, is journaled the bearing 27 in the top plate 5. Rotation the screw 24 is adap ed t i p movement to the mechanism hereinafter fully explained.

The usual electric motor 28 is mounted upon the base 4, and is operated by suitable outside source of electric source of supply. @n the driving shaft 29 of the motor 28 is suitably fixed the sprocket 30.

For the purpose of providing means whereby the carriage 9 may be operated at variable speeds upwardly and at one speed downwardly, the usual transmission 31 mounted upon the base 4, has on its input shaft 32 the gear 33 meshing with the gear 34 secured to the horizontal shaft 35 rotatably mounted in suitable bearings in the bosses 36 integral with the motor 28.

The transmission is the usual construction adapted to effect two different speeds of the output shaft 37 in one direction and one speed of the output shaft 37 in a reverse direction. Fixed to the end 38 of the shaft 35 is the sprocket 39 rotated by the belt chain 40 0peratively connected with the sprocket 30, whereby the output shaft 37 is adapted to be rotated by the motor 23 and the rotatable speed andithe direction of its rotation is controlled by manual operation of the usual gear shift lever 41.

The shaft 37 has suitably secured to its end the sprocket 42 having the belt chain 43 meshing;- therewith. The chain 43 is operatively meshed *ith the sprocket 44 fixed to the end 45 of the horizontal shaft 46 rotatably mounted in the bearings 47 in the upwardly extending bosses 48 integral with the base 4.

Secured to the end 49 of the shaft 46 is the bevel gear 50 meshing with the bevel gear 51 secured to the end 52 of the horizontal shaft 53 rotatably mounted in the upwardly eX- t'endine' bosses 54 integral with the base 4. Secured to the other end 55 of the shaft 53 is the bevel gear 56 meshing with the bevel gear 57 suitably fixed to the lower end of the screw 19.

For the purpose of accomplishing a low gear ratio from the transmission output shaft 37 to mechanism consisting of the set A of gears 50. 51, 5730, and 5679) adapted to operate the mechanism for elevating and lowering the carriage '9. the relatively small spur near 53 is fixed to the outer end of the shaft 35 and is meshed with the relatively large gear rotatably mounted upon the shaft 60 suitably fixed in the upwardly extending boss 61 integral with the base 4. Integrally formed with the hub 62 on the outer side of the gear 59 is the relatively small gear 63 meshing with the relatively large gear '64 rotat-ably mounted upon the end of the shaft 35. integrally formed with the hub 65 of the r 64 is a sprocket 66 operatively connected u .rt-h the sprocket 67 by the belt chain 68.

The idler sprocket 69, mounted on the shaft T0 fixed to the boss 71 integral with the base 4, meshes with the chain 68 to maintain the chain in operative position.

T he sprocket T2 is fixed to the shaft 73 rotatably mounted in the upwardly extending bosses 74 integral with the base 4. Rotatably n' ounted in the spaced apart upwardly extended 7 5 is the shaft '4'6 having suitably fixed thereto the sprocket 77 in alignmeiit with the sprocket 72. The belt chain 78 is geared to the sprockets 7 2 and 77 wherel j rotation of the shaft 73 imparts rotatable movement to the shaft 76. Fixed to the end of the shaft 6 is a beveled gear 79 meshing with. the beveled gear 80. fixed to the lower end of the screw 24. whereby rotatable movement is imparted to the screw, through the .ing mechanism consisting of set B of 59, 63 and 64, and set C of sprockets 66.. 72 and 77, by rotation of the shaft 35 operated by the output shaft 37 of the trans mission 31. whereby the rotatable speed of the screw 24 may be varied by operation of the gear shift handle 41 of the transmission.

Secured to the arms 81 which extend inwardlv frorthe sides 11 and 12 of the carr ge 9, is the plaster or other plastic material hopper 32 having the orifice 83 in its bottom 84 for the purpose of permitting plaster to be discharged from the hopper onto the plurality of plaster conveying belts 85 which are mounted adjoining each other in the circumferenti grooves 86 and 8?, respec tively, in the front and rear rollers 86 and 87.

The belts 85 are adapted to automatically convey the dried plaster, accumulating when the machine stands idle after use, f om the machine when the latter is operated whereby the conveying mechanism does not require frequent replacements and w ll no require manual cleansing.

The front roller 86 is mounted upon the shaft 83 having its ends 89 rotatably mounted in the bearings 90 and 91 in the sides 11 and 12 of the carriage frame 10. The rear roller 8'? is mounted upon the shaft 92 having its ends jonrnaled in the bosses 93 and 94 on bearings in the arms 81 of the carriage frame 10. The rear roller 87 has the centrally disposed circumferential groove 95 therein in which is mounted the sprocket 9G suitably fixed to the roller shaft 92.

Keyed, as by a usual feather key, to the screw 19 is the beveled gear 97 meshing with the bevel gear 98 fixed to the end of the hori zontal shaft 99 rotatably mounted in bearings in the webs 100 integral with the struts l5 and 16. Rotation of the screw 19 iinpai rotary movement to the gear 97 which is adapted to slide vertically on the screw. To the end 101 of the shaft 99 is fixed the sprocket 102 having meshed therewith the belt chain 193 which is meshed with the sprocket 96, whereby rotation of the output shaft 37 of the transmission is adapted, to

vertical body v the front 104 1 the hopper. The fixed to th fr nt of the hopper, is slidably received in the slot 106 extending vertically of the body 10. of the plate 105.

The upper horizontal end 109 of the plate is bent at right angles to the body 107 and has the hole 110 therein receiving the lower end of the bolt 111 having the head 112 in contact with the lower surface of the horizontal end 109 of the plate. The upper threaded end of the bolt 111 is received in the hole 113 in the horizontal end of the l.- shaped support, whereby manual screwing I and unscrewing the nut 114, threaded to the upper end of the bolt 111, in contact with the upper surface of the end 109, elevates and lowers the lower edge 115 of the plate with respect to the belts 85, thereby controlling the amount of plaster capable of bein conveyed by the belts toward the front roller 86, it being understood that gear connections in the transmission 31 are arranged by manual operation of the lever 41 to cause the screw 19. through the mechanism previously described, to impart rotatably moyement t the rear roller 37 the direction indicate by the arrow 116 when the plaster is being conveyed from the hopper toward the front roller during ascent of the carriage 9 which is positioned with the front roller 86 adjacent and parallel to the wall 117 being plastered, as shown in Fig. 7.

For the purpose of scraping the conycyer plaster from the belts 85, adjacent the wall 117, the scraper 118 is pivotally mounted on the bosses 119 of the downwardl extending arm 120 and 121 integral witl the sides 11 and 12. as by the pins 122 being received in the lower edge of the scraper. The upper edge of the scraper is urged in continuous contact with the belts 85 by the springs 123 having their respective ends secured to th scraper 118 and the respective arms.

For the purpose of forcing the plaster, scraped from the belts by the scraper 118, into the usual apertures of metal or wooden lathe the upper edge 124 of the pressing plate 125 is positioned adjacent the lower edge of the scraper. The plaster falls by gravit tion from the scraper upon the roller 126 having its ends journaled in le arms 120 and 121.

Cu the lower edge 12? of the pressing plate 125 are the lugs 128 received in the holes 129 in the downwardly extending arms 120 and 121 integral with the front ends of the sides 11 and 12 of the carriage frame.

On the rear surface of the pressing plate 125 is the rearwardly extending lug 130 in termediate its ends of the pressing plate. Pivotally connected with the lug 130 as by the pin 131, is the front end 132 or the pitman havi its rear threaded end 134 received in a h is in the upwardly extending finger 135 integral with the cam 136 rotatably mounted on the pin 13'? suitabl secured in the sides 138 of the rectangular casting 139, and extending through the rectangular opening 140 of the casting.

Fixed to the end of the rear roller shaft-92 is the spur gear 141 meshing with the idler 142 fined to the stud 143 rotatably mounted in the downwardly extending arm integral with the side of the carriage .s respectively, rotatably mounted in the downwardly extending and 148 integral with the sides 11 a t carriage frame 10.

The rear vnd 149 of the casting 139 is mounted upon the shaft 146. The cam 50 is fixed to the shaft 146 which is caused to rotate by the mechanism previously e):- plained. The finger 151 integral with the cam 150 intermittently engages the finger 152 of the cam 136, thereby forcing the cam 136 to rotate in an arc, whereby the pitman 133 is intermittently forced rearwardly, thereby imparting intermittent rearward movement to the upper edge of the pivotally mounted pressing plate to the position represented by the dotted lines 125. When the finger 151 of the cam 150 disengages the finger 152 of the cam 136, the springs 153, fixed the pressing plate and the rear end of the pitman 133, urges the upper edge of the pressing plate forwardly, whereby the plaster which falls from the scraper 118 onto the roller 126, during the rearward position of the pressing plate, is forced in contact with the wall 117.

The intermittent operation of the pressing plate continues during the ascent of the carriage 9 from the lower edge to the upper edge of the wall 117, whereby a strip of plaster in area equal to the product of the width of the front roller 86 and the length of the press ing plate 125 is applied from the lower edge to the upper edge of the wall.

When the carriage 9 travels to the-u per edge of the wall, the gear shift lever 41 is manually operated and the output shaft 37 of the transmission 31 is caused to operate in a reverse direction whereby, through the mechanism previously explained, the carriage 9 is caused to descend to the lower edge of the wall, and the machine 1 is moved on its base 154 with the roller 126 in contact with the.

wall 117. The front roller 85 and the pressing plate 125 being parallel to the roller 126, are therefore adjacent and parallel to the u: plastered area of the wall, adjacent the plastered strip, whereby when the gear shift lever is manually operated to cause the output shaft 37 to rotate in an opposite direction r) cause the carriage 9 to ascend another strip of plaster is applied to the wall.

After one or more strips of plaster are applied to the wall, it being desirable to smooth the outer surface of the plaster, tie noou; ing mechanism 155 is provided for this purpose.

The smoothing mechanism D consists of the trowels 156 having its rear surface fixed to the rod extending at right angles to the rear surface of the trowel. The outer end 158 of the rod 15. is slidably received in holes in the adjusters 159 and secured therein by the thumb screw 160 tiireaded in the side of the adjuster and adapted to be manually screwed inwardly in contact with the inner end of the rods, whereby the outer surface of the trowel is maintained in alignment with the outer surface of the applied plaster, after the trowel is properly adjusted. Integral with the inner end of the ad 159 is the headed lug 161 slidably mo in the forward portion of the slot in arm 163 which extends rearwardly. rear end 164 of the arm 163 is pivotally mounted. upon the pin 165 in the upper end 166 of the cam 16'? having its lower end 168 mounted on the shaft 143.

Movement is imparted to the trowel 156 as by the pin 169 secured to the cam 1T0 fixed to the shaft 171 having mounted on it oer end the bevel gear 1'72 meshing with the bevel gear 173 keyed to the rotatable screw 24 whereby upward and downward movement is impartec t the arm 163 on which the trowel is mounted.

For the purpose of gauging the thickness of the plaster applied to the wall, the 17a is positioned in front of the roller 126 and is adapted to be adjusted with respect to the wall, as by manually adjusting the sprin metal plates 175 (having their lower end iii-zed to the ends of the gauge 1. upward and downwardly. The upper ends 176 or the plates are slidably received in the clips 17? fixed on the arms 120 and 121. l Vhen the gauge is properly adjusted, the screws 178 are screwed inwardly to maintain the plates in fixed position.

A advantage of the invention is that plaster or similar material can be quickly spread upon surfaces. Moreover, the pressing plate automatically forces the plaster in the apertures of the lathe and simultaneously upward movement of the carriz'rge 9 causes the gauge, and the trowel to smooth the outer surface of the plaster. In this manner, the outer surface of the plaster is caused to be smooth and in vertical alignment.

Since the operator of the plastering machine will have considerable idle time during the period required for the carriage to travel the vertical height of the wall, it is entirely practical for one operator to simultaneously operate two or more machines in the same rooni or adjoining rooms.

It is readily apparent that this latter advai ge is very important when it is considered that in buildings having unusually large rooms, one operator being capable of operating two or more plastering machines, he saving in the cost of applying the plaster will soon enable users to purchase several plaster-in q machines.

Also, since experienced plasterers are comaratively scarce and the dai y wage of this lass of arans is relatively high, the saving x1e labor cost of applyin plaster by utilict-ion of the invention is proportionally Aiotner d antage of the invention is that the outer su .ace or finish of the plastering may be conveniently varied in accordance w h the requirements and desires of the users sii oly by utilizing trowels having finishing sur races adapted to effect the particular kind of finish desired on the plaster.

Still another advantage of the invention is that the plurality of belts for conveying the plaster enables the operator to startthe machine without dificulty after the plaster adhering on the conveyor has hardened from disuse. Also, operation of the machine causes the plaster remaining on the conveyor to break into small pieces which are carried outwardly of the machine and dropped upon the floor, whereby the machine is automatically cleaned and made ready for the plaster applying operation.

It is, therefore, apparent that I have invented a highly desirable device for the purposes intended which may be practically and economically utilized for the purposes intended.

It is apparent that the device may be made of any size, and constructed of any materials deemed convenient and suitable for an apparatus of this character, and while I have illustrated and described a form of construction and arrangement of the elements found desirable in materializing the invention, 1 wish to emphasize the fact that I desire to include in this application all equivalents and ubstitutes that may fairly be considered to come 'ithin the scope and purview of the invention as defined in the claims.

lVhat I claim as new and desire to secure by Letters Patent is:

1. In a device of the class described, a frame, a carriage frame slidably mounted on said first mentioned frame, means to move said carriage frame on said first mentioned frame, a supply hopper mounted on said carriage frame and having a discharge orifice,

conveying means on said carriage frame, means to operate said conveying means whereby plaster discharged from said orifice is adapted to be conveyed to a surface, pressing means, means to operate said pressing means whereby said conveyed plaster is pressed in contact with said surface, a gauge adapted to be adjusted with respect to said walled surface whereby the thickness of the plaster applied to said walled surface is controlled, a trowel mounted on said carriage frame, manually operative means to adjust said trowel, and means to impart movement to said trowel whereby the sur ace of the plaste applied to said walled surface is smoothed.

2. In a device of the class described, a frame, a carriage frame slidably mounted on said first mentioned frame, a supply hopper mounted on said carria frame and having a discharge orifice at its bottom, a rear horizontal roller rotatably mounted on the roar of. said carriage frame. a front horizontal roller rotatably mounted on the front of s d carriage frame, said first mentioned f me adapted to be positioned to arrange said ront olle= adjacent walled surface, a plurality belts on said rollers, said belt; be ng arra ged in contactina" relation w v i l below said discharge orilice, manually to adjust the size of said ar er whereit tlce cons a roller, a I mounted on said car ccr discharged ficveyed by said belts essing plate pivotal r1 frame and pos alls by gravitation from said pelts is pressed in contact witl said walled surface, a roller mounted iQCQ plast r applied to said walled surface is smoothed.

S. in a device of the described, a frame, a carriage frame slida ole vertically o said first mentioned frame, means to slide d carriage frame on said first mentioned frame, a supply hopper moui ted on said carriage frame and havri discharge orilice at its bottom,'a rear horizontal roller rotatably mounted on the rear of said carriage frame, a front horizontal roller rotatably mounted on the front of said or iage frame and adapt-ed to be positioned ad acent a walled surface, conveyin means on said rollers and arranged below said discharge orifice, means to rotate said rear roller whereby plaster discharged from said orifice is conveyed by said conveying means to said front roller adjacent said walled surface, a pressing plate pivotally mounted on carriage frame and positioned below said front roller, means to operpressing slate whereby said plaster which falls by gravitation from said conveyl in contact with said walled surface, a gauge mounted on said carriage frame and adapted to be manually at justed with respect to said walled surface to vary the thicknes of tiie plaster applied to said walled surface, a trowel mounted on said carriage fi line, means to impart movement to said trowel whereby the surface of the plaster a plied to said walled surface is smoothed.

l. In a device of the class described, a rame, a carriage frame slidably mounted on aid first mentioned frame, means to move id carriage ame from bottom to top of *aid first me net, frame, a plaster supply nopper mounted on said carriage frame ans having a discharge orifice at its bottom, a rear horizontal roller rotatably mounted on the rear of said carriage frame, a front horizontal roller rotatably mounted on the front of said carriage frame and adapted to be positioned adjacent a walled surface, conveying means on said roller and arranged below said discharge orilice, ma ually operative means to control the qua city of plaster discharged through said orifice onto said conveying means, means to operate said conveying means whereoy plaster discharged from said orifice is conveyed by said conveying means to said front roller adapted to be positioned adjacent said walled surface, a pressing plate mounted on said carriage frame, means to operate said pressing plate whereby plaster which falls by gravitation from said conveying means is pressed in contact with said walled surface, a gauge mounted on said carriage frame and adapted to be manually adjusted with respect to said walled surface to control the thickness of the plaster applied to said walled surface, a trowel mounted on said carriage frame, means to impart movement to said trowel whereby the surface of the plaster applied to said walled surface is smoothed.

ENRIOO MORELLI.

ing means is presse 

